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| Number | Title | Issue Date |
| 6452711 | Electro chromic assembly based on poly (3,4-ethylenedioxythiophene derivatives in the electrochromic layer and the ion-storage layer Electrochromic assemblies having a layer structure, characterized in that two layers each contain an electrically conductive, electrochromic polydioxythiophene selected from the same group of substances.... | 09/17/2002 |
| 6400491 | Fast-switching reversible electrochemical mirror (REM) A reversible electrochemical mirror (REM) includes a first electrode and a second electrode, one of which is substantially transparent to at least a portion of the spectrum of electromagnetic radiation. An essentially nonaqueous electrolytic solution, dis... | 06/04/2002 |
| 6396617 | Photonic band gap device and method using a periodicity defect region doped with a gain medium to increase photonic signal delay A photonic band gap structure device and method for delaying photonic signals of a predetermined frequency and a predetermined bandwidth by a predetermined delay is provided. A Fabry-Perot delay line device has several regions of periodically alternating ... | 05/28/2002 |
| 6388817 | F-theta lens An fθ lens comprises, successively from the luminous flux entrance side, a first lens made of a negative lens having a flat surface on one side, a positive second lens having a surface with a stronger curvature directed onto the image side, and a third l... | 05/14/2002 |
| 6388794 | Method and apparatus for spectrum analysis and encoder A disc serving as a spatial radiation modulator has dispersed radiation filters thereon. Each filter has a transmittance or reflectance modulation function of the form sin2 (mθ+pπ/4), where m is a positive integer and p has one of the four va... | 05/14/2002 |
| 6388822 | Optical pickup device and optical recording medium An optical pickup device which includes an objective lens having a numerical aperture of 0.7 or more collects light emitted from a light source and irradiates an optical recording medium. The objective lens and an antireflection film formed thereon are se... | 05/14/2002 |
| 6384402 | Optical vend-sensing system for control of vending machine For ensuring that a vending machine motor will continue to operate until a product has descended through a vending space or an established time interval has elapsed, an optical beam is established across the vend space through which a product must drop. A... | 05/07/2002 |
| 6384956 | Robust reset-free polarization controller consisting of quarter-wavelength plates A reset-free polarization controller is presented for maintaining the polarization of an incident optical signal at a fixed and known value. At least 3 controllable quarter-wavelength plates are connected in cascade to an incident optical source having a ... | 05/07/2002 |
| 6381074 | Light collecting optical system A light collecting optical system wherein the position where light is collected is scanned in the optical axis direction by using a wavefront converting element capable of changing power without using a mechanical device, and aberration occurring during t... | 04/30/2002 |
| 6373167 | Surface acoustic wave filter The present invention disclosed a SAW filter in which unnecessary space on a chip can be reduced in comparison with the prior art, and in which a smaller chip can be realized. Because oblique step shaped reflection surfaces are provided in order to reflec... | 04/16/2002 |
| 6369957 | Solid immersion lens and production method thereof A solid immersion lens has a positioning surface and a surface including a convex surface forming an effective optical path. The solid immersion lens has a hemispherical or hyperhemispherical shape provided with a convex surface on the light entering side... | 04/09/2002 |
| 6362915 | Bichromal beads having crystalline materials therein A display media with an encapsulant medium, and bichromal beads having a crystalline material, wherein the bichromal beads are dispersed or contained in the encapsulant medium is set forth.... | 03/26/2002 |
| 6362925 | Lens group zoom lens system, and display device having phototaking function The invention relates to a zoom lens system of three-group construction, one lens for each group, which is less susceptible to aberration variations even upon zooming and can achieve entire-length reductions, large lens aperture and high zoom ratio. The z... | 03/26/2002 |
| 6356396 | Optical system having a generalized torus optical corrector An optical system includes a window, an optical corrector formed of a curved piece of a transparent material having a front surface and a back surface, and a sensor system with a sensor positioned such that the optical corrector is between the window and ... | 03/12/2002 |
| 6356399 | Light projecting method, surface inspection method, and apparatus used to implement these methods The present invention provides a light illuminating method, a surface examining method using the light illuminating method, and apparatuses for performing these methods. In the surface illuminating apparatus for illuminating an object with a light beam fr... | 03/12/2002 |
| 6351330 | Micromirror device for image display apparatus A micromirror device for an image display apparatus in which it is possible to drive a mirror by rotation is provided. The micromirror device according to the present invention includes a substrate, a pair of first posts protrusively formed on an upper su... | 02/26/2002 |
| 6351328 | Variable transmittance electrochromic devices Single-compartment, self-erasing, solution-phase electrochromic devices, solutions of electrochromic compounds for use as media of variable transmittance in such devices, and electrochromic compounds for such solutions are provided. The devices of the inv... | 02/26/2002 |
| 6351331 | Faraday rotator and magneto-optical element using the same A Faraday rotator whose Faraday's rotational angle has low temperature-dependency; a method for efficiently preparing the same; a magneto-optical element which makes use of the Faraday rotator and whose characteristic properties are not susceptive to temp... | 02/26/2002 |
| 6342976 | Luminous flux diameter variable type objective lens and optical apparatus using the same A luminous flux diameter variable type objective lens having a wavelength selectivity is disposed within a luminous flux. Arranged on a surface of the lens are a first region 11 with no diffraction gratings, and a second region 12 with diffraction grating... | 01/29/2002 |
| 6333824 | Zoom lens system consisting of two lens units A zoom lens system for compact cameras comprising, in order from the object side, a first negative lens unit and a second positive lens unit, and configured to be zoomed from a wide position to a teleposition by moving the lens units toward the object sid... | 12/25/2001 |
| 6330101 | EC panel drive unit for a rear-view mirror An EC panel drive unit for a rear-view mirror comprising a timer circuit 2 in which a drive signal is output for a fixed period of time when either a colored state switch SW1 or a colorless state switch SW2 is in the ON position; a D-type flip-flop circui... | 12/11/2001 |
| 6330099 | Liquid crystal apron and skirt isolation for silicon micro displays An apron and a skirt of a spatial light modulator are each coupled to a substrate by reverse-bias diodes. The spatial light modulator includes liquid crystal material between an array of electrodes and a ground electrode. The apron surrounds the array, an... | 12/11/2001 |
| 6324016 | Telecentric lens A reflective telecentric lens which uses an on-axis type concave mirror in a pseudo-off-axis manner to avoid blockage of a portion of the field of view. The concave mirror used in a pseudo-off-axis manner permits the telecentric stop, imaging lens, and fi... | 11/27/2001 |
| 6262830 | Transparent metallo-dielectric photonic band gap structure A transparent metal structure permits the transmission of light over a tunable range of frequencies, for example, visible light, and shields ultraviolet light and all other electromagnetic waves of lower frequencies, from infrared to microwaves and beyond... | 07/17/2001 |
| 6259549 | Laminated glass pane assembly with electrically controllable reflectance and method of making said assemblies A laminated glass pane assembly with electrically controllable reflectivity, especially for controlling the entry of sunlight and solar heat into vehicles or buildings. The laminated glass pane comprises a first glass pane, an electroreflective functional... | 07/10/2001 |
| 6259565 | Display apparatus A semi-spherical system holding mechanism 8 such as to cover the head portion of the user is provided in the upper portion of a user holding mechanism 9 such as chair, sofa, or the like. A display apparatus 7 is fixed in the system holding mechanism 8. In... | 07/10/2001 |
| 6252723 | Objective optical system An objective optical system comprising, in order from the object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power and a third lens unit having a positive refractive power, wherein the second... | 06/26/2001 |
| 6243192 | Electrochemical display and timing mechanism with migrating electrolyte Printed electrochemical display cells are arranged in layer form with two electrode layers and an electrolyte layer occupying distinct areas of a substrate. When activated, an electrochemical reaction progressively increases the area occupied by the elect... | 06/05/2001 |
| 6243207 | Display apparatus A semi-spherical system holding mechanism 8 such as to cover the head portion of the user is provided in the upper portion of a user holding mechanisms 9 such as chair, sofa, or the like. A display apparatus 7 is fixed in the system holding mechanism 8. I... | 06/05/2001 |
| 6243215 | Image magnifying Fresnel lens for observation of a on display screen There is disclosed a Fresnel lens, adapted to be placed in front of a display screen of a computer or a television set in order to magnify images for observation, which does not cause a rainbow-like pattern to appear even when annular prism elements as th... | 06/05/2001 |
| 6243216 | Fast responding optical modulator A fast responding optical modulating device for a high-density recording using in an optical pickup includes a light source, an optical modulator and a pair of lenses. The pair of lenses are so arranged that the distance between the lenses is shorter than... | 06/05/2001 |
| 6239921 | Taking lens system A taking lens system has, from the object side, a front lens unit, an aperture stop, and a rear lens unit. The front lens unit is composed of two lens elements that are, from the object side, a positive glass element and a negative plastic lens element. T... | 05/29/2001 |
| 6239898 | Electrochromic structures Electrochromic windows and panels are provided which have first and second spaced elements that are optically transparent to visible light. The first and second elements each have first and second sides, and the windows and panels define a sealed chamber ... | 05/29/2001 |
| 6236493 | Optical components with a graded-index structure, and method of manufacturing such components Optical components have a material-distribution gradient due to nanometer-size particles embedded in a solid matrix. The components are manufactured by forming a dispersion of nanometer-size particles in a liquid, curable matrix material, causing the part... | 05/22/2001 |
| 6236518 | Zoom lens system A zoom lens system includes a positive first lens group and a negative second lens group, in this order from the object. Zooming is performed by varying the distance between the first lens group and the second lens group. The positive lens group includes ... | 05/22/2001 |
| 6236515 | Zoom lens system A zoom lens system has the first and second lens units. During zooming from a wide-angle end to a telephoto end, the lens units are moved to decrease a distance therebetween. The first lens unit has a positive refractive power. The second lens unit has a ... | 05/22/2001 |
| 6233099 | Zoom lens and optical apparatus having the same A zoom lens of the negative lead type includes, in order from the object side, a first lens unit of negative refractive power, a second lens unit of positive refractive power, a third lens unit of negative refractive power consisting of one negative lens,... | 05/15/2001 |
| 6233088 | Methods for modulating a radiation signal A reflector having a mechanically deformable portion of at least one reflective surface is disclosed. By deforming the portion of the reflective surface, discontinuity is introduced in that portion of the reflective surface. The discontinuity in the refle... | 05/15/2001 |
| 6229654 | Article with radial refractive index gradient and process for its manufacture The transparent article with radial gradient index, according to the invention, comprises a matrix made of a first transparent polymer having a first refractive index n1 and a first Abbe number .nu.1, a second transparent polymer, di... | 05/08/2001 |
| 6226129 | Imaging optical system and image forming apparatus Disclosed is an imaging optical system and an image forming apparatus that provide a small-size design and high resolution. An optical system (telecentric optical system) between the composite focus 4d of an imaging surface side and a laser array 1 is div... | 05/01/2001 |
